The Geochemistry Records of Sea-Level Relative Movement and Paleoclimatic Evolution of the South China Continental Margin in Late Triassic-Early-Middle Jurassic
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摘要: 晚三叠-中侏罗世华南陆缘发生多期海侵-海退旋回.元素地球化学特征指示的古盐度高低和古水深深浅记录了海平面的相对升降.华南陆缘存在3个级别的海平面变化.其中, Ⅲ级海平面波动频繁, 由晚三叠世3次波动、早侏罗世4次波动和早、中侏罗世2次波动构成了此间大规模海侵-海退旋回.华南陆缘Ⅰ级海平面相对升降曲线与全球海平面长周期曲线, 在诺利克阶早期-辛涅缪尔阶晚期变化同步, 在辛涅缪尔阶晚期-阿连阶变化相悖.Ⅲ级海平面相对升降曲线与全球海平面短周期曲线, 在瑞替阶-辛涅缪尔阶晚期同发生4次波动, 时间上近乎同步.Sr/Cu值指示的元素迁移与富集反映了气候的温湿与干热.粤中-粤东地区晚三叠-早、中侏罗世经历了温湿-干热-温湿的气候变化.Abstract: The margin of South China in Late Triassic-Middle Jurassic had undergone multi transgression-regression cycles. The element geochemistry character indicates the paleosalinity and the water depth records the relative movements of the sea level. There are three levels of sea level change in the margin of South China. The grade III sea-level fluctuated frequently. There were 3 times in Late Triassic, 4 times in Early Jurassic and 2 times in Early or Middle Jurassic. These fluctuations constituted a large-scale transgression-regression cycle. The relative movements curve of the grade I sea-level is synchronous with the change of the long-period global sea-level curve in early Norian-late Sinemurian of the margin of South China. But it is contrary in late Sinemurian-Aalenian. The relative movements curve of the grade III sea-level and the short-period global sea-level curve occurred 4 fluctuations in Rhaetian-late Sinemurian. And they were almost simultaneously in time. The element migration and enrichment which were indicated by Sr/Cu reflected the warm-humid and dry-heat of the climate. The area of Middle Guangdong-East Guangdong in Late Triassic-Early-Middle Jurassic undergone the climate change of warm-humid to dry-heat and to warm-humid.
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Key words:
- the margin of South China /
- Early Mesozoic /
- sea-level change /
- paleoclimate /
- geochemistry /
- marine geology
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图 1 粤中-粤东地区地质略图及剖面位置(据舒良树等, 2004)
Fig. 1. The geological sketch map and profile location of the area in Middle Guangdong-East Guangdong
表 1 晚三叠-早、中侏罗世典型剖面常量、微量元素比值
Table 1. Content and element ratio of the typical profile in Late Triassic-Early-Middle Jurassic
时代 层位 样品号 岩性 m=100×MgO/Al2O3 Ca/Mg Sr/Ba B/Ga Sr/Cu 晚三叠世 小坪组凤岗段 FG-1 泥岩 2.96 1.75 0.04 1.56 2.43 FG-2 泥岩 3.69 0.97 0.04 1.45 2.48 FG-3 泥岩 3.00 0.58 0.04 1.44 2.78 FG-4 泥岩 2.83 0.95 0.04 1.52 0.83 FG-8 泥岩 6.19 1.17 0.19 1.31 14.76 FG-9 泥岩 6.88 0.66 0.19 1.42 11.89 FG-10 泥岩 4.78 0.85 0.15 0.83 21.30 FG-11 泥岩 2.46 0.39 0.13 1.98 2.73 小坪组马鞍段 MA-18 泥岩 3.32 1.27 0.26 3.72 13.27 MA-19 泥岩 3.38 0.46 0.26 2.92 12.72 MA-23 泥岩 3.91 0.33 0.06 1.43 8.41 早侏罗世 银瓶山组 HF-20 泥岩 1.43 0.24 0.15 6.46 75.29 HF-19 泥岩 1.56 0.79 0.22 11.51 7.29 HF-4 泥岩 1.77 0.30 0.23 4.53 9.03 上龙水组 HF-3 泥岩 1.19 0.16 0.28 — 34.95 HF-2 泥岩 1.66 0.65 0.25 4.76 16.68 HF-1 泥岩 1.49 0.19 0.20 4.36 8.80 HF-38 泥岩 1.71 0.41 0.20 4.55 7.07 HF-37 泥岩 2.06 0.24 0.16 — 3.65 长埔组 HF-31 泥岩 1.92 0.14 0.09 7.44 5.20 HF-26 泥岩 2.21 0.09 0.13 8.96 13.15 吉水门组 HF-25 泥岩 1.60 0.14 0.16 4.04 3.48 青坑村组 QK-2 泥岩 2.52 0.20 0.10 3.23 11.35 QK-3 泥岩 3.40 0.13 0.11 4.30 10.16 QK-4 泥岩 3.13 0.08 0.08 3.19 2.63 早-中侏罗世 桥源组 KT-8 粉砂质泥岩 5.72 0.08 0.08 4.92 2.18 KT-1 粉砂质泥岩 3.33 0.37 0.04 2.93 3.07 KT-2 粉砂质泥岩 2.99 0.33 0.06 2.18 1.62 KT-3 粉砂质泥岩 7.56 0.07 0.07 1.46 0.43 KT-4 粉砂质泥岩 8.65 0.13 0.05 2.31 0.74 KT-5 粉砂质泥岩 1.87 0.30 0.19 1.56 0.82 KT-6 粉砂质泥岩 4.13 0.39 0.11 2.97 7.81 KT-11 粉砂质泥岩 4.09 0.13 0.06 3.96 0.72 注: 样品由吉林大学实验测试中心完成.常量元素用X射线荧光光谱仪测定;微量稀土元素用ICPMS质谱仪测定.“—”为B元素未检测出数据, 未得出计算结果. -
Chen, H.Z., Sun, Z., Zhou, D., 2003. Distributions of Mesozoic lithofacies and marine strata in South China. Journal of Tropical Oceanography, 22(2): 74-82 (in Chinese with English abstract). http://www.zhangqiaokeyan.com/academic-journal-cn_journal-tropical-oceanography_thesis/0201252198373.html Feng, H.Z., Yu, J.H., Fang, Y.T., et al., 1993. Analysis on palaeosalinity in Wufengian in the Upper Yangtze region. Journal of Stratigraphy, 17(3): 179-185 (in Chinese). http://www.researchgate.net/publication/285736726_Analysis_of_paleosalinity_during_the_Wufeng_age_in_Upper_Yangtze_Sea Fu, Q., 2005. Rare elements utility in Paleo-Lake evolvement and signification of Lower Tertiary Funing Formation, Gaoyou sag, Subei basin. Journal of Tongji University (Natural Science), 33(9): 1219-1239 (in Chinese with English abstract). http://www.oalib.com/paper/2369526 Guangdong Province Bureau of Geological and Mineral, 1988. Regional geology of Guangzhou Province. Geological Publishing House, Beijing, 180-198 (in Chinese). Han, Y.L., Wang, H.H., Chen, Z.H., et al., 2007. Paleosalinity analysis and trace element geochemistry of Chang-6 Member in Gengwan-Shijiawan area, Ordos basin. Litholigic Reservoirs, 19(4): 16-20 (in Chinese with English abstract). http://www.zhangqiaokeyan.com/academic-journal-cn_lithologic-reservoirs_thesis/0201218956931.html Hao, H.J., Lin, H.M., Yang, M.X., et al., 2001. The Mesozoic in Chaoshan depression: a new domain of petroleum exploration. China Offshore Oil and Gas (Geology), 15(3): 157-163 (in Chinese with English abstract). http://www.researchgate.net/publication/285705872_The_Mesozoic_in_Chaoshan_Depression_A_New_Domain_of_Petroleum_Exploration Hao, H.J., Wang, R.L., Zhang, X.T., et al., 2004. Mesozoic marine sediment identification and distribution in the eastern Pearl River Mouth basin. China Offshore Oil and Gas, 16(2): 84-88 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZHSD200402001.htm He, J.X., Shi, X.B., Xia, B., et al., 2007. The satus of the petroleum exploration in the northern South China Sea and the resource potential in the deep-water areas. Advances in Earth Science, 22(3): 261-270 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DXJZ200703005.htm Huang, J.X., 1986. Preliminary study of geochemistry in the vertical sediments from the central Pacific. Marine Science Bulletin, 5(3): 41-48 (in Chinese with English abstract). http://epub.cnki.net/grid2008/docdown/docdownload.aspx?filename=HUTB198603007&dbcode=CJFD&year=1986&dflag=pdfdown Keith, M.L., Degens, E.T., 1959. Geochemical indicators of marine and fresh water sediments. In: Abelson, P.H., ed., Researches in geochemistry. John Wiley & Sons, New York, 38-61. Lerman, A., 1989. The chemical geology and physics of the lakes. Translated by Wang, S.M. . Geological Publishing House, Beijing (in Chinese). Li, J.L., Chen, D.J., 2003. Summary of quantified research method on paleosalinity. Geology and Recovery Efficiency, 10(5): 1-3 (in Chinese with English abstract). http://www.researchgate.net/publication/290161946_Summary_of_quantified_research_method_on_paleosalinity Ma, L., Chen, H.J., Gan, K.W., et al., 2004. The continental tectonics and the marine petroleum geology in South China (I). Geological Publishing House, Beijing, 86-90 (in Chinese). Qiu, X.W., Liu, C.Y., Mao, G.Z., et al., 2011. Petrological-geochemical characteristics of volcanic ash sediments in Yanchang Foramtion in Ordos basin. Earth Science—Journal of China University of Geosciences, 36(1): 139-150 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQKX201101016.htm Shu, L.S., Zhou, X.M., 2002. Late Mesozoic tectonism of Southeast China. Geological Review, 48(3): 249-260 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZLP200203004.htm Shu, L.S., Zhou, X.M., Deng, P., et al., 2004. Geological features and tectonic evolution of Meso-Cenozoic basins in southeastern China. Geological Bulletin of China, 23(9-10): 876-884 (in Chinese with English abstract). http://www.researchgate.net/publication/312445864_Geological_features_and_tectonic_evolution_of_Meso-Cenozoic_basins_in_southeastern_China Vail, P.R., Mitchum, R.M., Thompson, J.R., et al., 1977. Seismic stratigraphy and global changes of sea level. In: Payton, C.E., ed., Seismic straigraphy-applications to hydrocarbon exploration. American Association of Petroleum Geologists Memoir, 26: 49-212. Wang, S.J., Huang, X.Z., Tuo, J.C., et al., 1997. Evolutional characteristics and their paleoclimate significance of trace elements in the Hetaoyuan Formation, Biyang depression. Acta Sedimentologica Sinica, 15(1): 65-70 (in Chinese with English abstract). http://d.wanfangdata.com.cn/periodical/QK199700005821 Wang, S.S., Cao, Z.M., Lan, D.Z., et al., 2010. Geochemical characheristics of sediment of Pearl River estuary and its paleoenvironmental evolution. Earth Science—Journal of China University of Geosciences, 35(2): 261-267 (in Chinese with English abstract). doi: 10.3799/dqkx.2010.026 Wang, Y.Y., Guo, W.Y., Zhang, G.D., 1979. Application of some geochemical indicators in determining of sedimentary environment of the Funing Group, Jinhu depression, Kiangsu Province. Journal of Tongji University, (2): 51-60 (in Chinese with English abstract). http://www.researchgate.net/publication/284381938_Application_of_some_geochemical_indicators_in_determining_of_sedimentary_environment_of_the_Funing_Group_Jinhu_depression_Jiangsu_Province Wen, H.G., Zheng, R.C., Tang, F., et al., 2008. Reconstruction and analysis of paleosalanity and paleoenvironment of the Chang-6 Member in the Gengwan region, Ordos basin. Journal of Mineralogy and Petrology, 28(1): 114-120 (in Chinese with English abstract). http://www.researchgate.net/publication/288396505_Reconstruction_and_analysis_of_paleosalanity_and_paleoenvironment_of_the_Chang_6_member_in_the_Gengwan_Region_Ordos_Basin Xu, Z.J., Cheng, R.H., Wang, L.L., et al., 2009. Paleosalinity records to sea level change of the northern margin of the South China Sea in Early Jurassic. Acta Sedimentologica Sinica, 27(6): 1147-1154 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CJXB200906018.htm Xu, Z.J., Cheng, R.H., Wang, L.L., et al., 2010. Elemental geochemical characteristics of tuffaceous sediments and tectonic setting of Tangxia Formation of Middle Jurassic in Dongguan, Guangdong Province. Acta Petrologica Sinica, 26(1): 352-360 (in Chinese with English abstract). Zhang, S.S., 1990. Changes of Mg/Al content ratio in surface sediments from Central Pacific Ocean. Journal of Oceanography Taiwan Strait, 9(3): 244-249 (in Chinese with English abstract). Zhao, Y.S., Song, Z.Y., Wen, J.P., et al., 1998. Quantitative evaluation of paleosalinites and distribution of trace elements in the lacustrine mudstone of Baoshan basin. Oceanologia et Limnologia Sinica, 29(4): 409-416 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HYFZ199804010.htm Zheng, R.C., Liu, M.Q., 1999. Study on palaeosalinity of Chang-6 oil reservoir set in Ordos basin. Oil and Gas Geology, 20(1): 20-26 (in Chinese with English abstract). http://ogg.pepris.com/EN/Y1999/V20/I1/20 Zhou, D., Sun, Z., Chen, H.Z., et al., 2005. Mesozoic lithofacies, paleo-geography, and tectonic evolution of the South China Sea and surrounding areas. Earth Science Frontiers, 12(3): 204-218 (in Chinese with English abstract). http://www.researchgate.net/publication/313563364_Mesozoic_lithofacies_paleo-geography_and_tectonic_evolution_of_the_South_China_Sea_and_surrounding_areas 陈汉宗, 孙珍, 周蒂, 2003. 华南中生代岩相变化及海相地层时空分布. 热带海洋学报, 22(2): 74-82. doi: 10.3969/j.issn.1009-5470.2003.02.008 冯洪真, 俞剑华, 方一亭, 等, 1993. 五峰期上扬子海古盐度分析. 地层学杂志, 17(3): 179-185. https://www.cnki.com.cn/Article/CJFDTOTAL-DCXZ199303002.htm 傅强, 2005. 微量元素分析在高邮凹陷古近纪湖泊演化中的应用. 同济大学学报(自然科学版), 33(9): 1219-1239. doi: 10.3321/j.issn:0253-374X.2005.09.015 广东省地质矿产局, 1988. 广东省区域地质志. 北京: 地质出版社, 180-198. 韩永林, 王海红, 陈志华, 等, 2007. 耿湾-史家湾地区长6段微量元素地球化学特征及古盐度分析. 岩性油气藏, 19(4): 16-20. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX200704003.htm 郝沪军, 林鹤鸣, 杨梦雄, 等, 2001. 潮汕坳陷中生界——油气勘探新领域. 中国海上油气(地质), 15(3): 157-163. https://www.cnki.com.cn/Article/CJFDTOTAL-ZHSD200103000.htm 郝沪军, 汪瑞良, 张向涛, 等, 2004. 珠江口盆地东部海相中生界识别及其分布. 中国海上油气, 16(2): 84-88. doi: 10.3969/j.issn.1673-1506.2004.02.002 何家雄, 施小斌, 夏斌, 等, 2007. 南海北部边缘盆地油气勘探现状与深水油气资源前景. 地球科学进展, 22(3): 261-270. doi: 10.3321/j.issn:1001-8166.2007.03.006 黄剑霞, 1986. 中太平洋垂向沉积物地球化学初步研究. 海洋通报, 5(3): 41-48. https://www.cnki.com.cn/Article/CJFDTOTAL-HUTB198603007.htm 莱尔曼, 1989. 湖泊的化学地质学和物理学. 王苏民, 译. 北京: 地质出版社. 李进龙, 陈东敬, 2003. 古盐度定量研究方法综述. 油气地质与采收率, 10(5): 1-3. doi: 10.3969/j.issn.1009-9603.2003.05.001 马力, 陈焕疆, 甘克文, 等, 2004. 中国南方大地构造和海相油气地质(上). 北京: 地质出版社, 86-90. 邱欣卫, 刘池洋, 毛光周, 等, 2011. 鄂尔多斯盆地延长组火山灰沉积物岩石地球化学特征. 地球科学——中国地质大学学报, 36(1): 139-150. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201101016.htm 舒良树, 周新民, 2002. 中国东南部晚中生代构造作用. 地质论评, 48(3): 249-260. doi: 10.3321/j.issn:0371-5736.2002.03.004 舒良树, 周新民, 邓平, 等, 2004. 中国东南部中、新生代盆地特征与构造演化. 地质通报, 23(9-10): 876-884. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD2004Z2007.htm 王珊珊, 曹志敏, 兰东兆, 等, 2010. 珠江口沉积地球化学特征与古环境演化过程. 地球科学——中国地质大学学报, 35(2): 261-267. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201002009.htm 王随继, 黄杏珍, 妥进才, 等, 1997. 泌阳凹陷核桃园组微量元素演化特征及其古气候意义. 沉积学报, 15(1): 65-70. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB701.011.htm 王益友, 郭文莹, 张国栋, 1979. 几种地球化学标志在金湖凹陷阜宁群沉积环境中的应用. 同济大学学报, 2: 51-60. https://www.cnki.com.cn/Article/CJFDTOTAL-TJDZ197902005.htm 文华国, 郑荣才, 唐飞, 等, 2008. 鄂尔多斯盆地耿湾地区长6段古盐度恢复与古环境分析. 矿物岩石, 28(1): 114-120. https://www.cnki.com.cn/Article/CJFDTOTAL-KWYS200801016.htm 许中杰, 程日辉, 王嘹亮, 等, 2009. 南海北部陆缘早侏罗世海平面变化的古盐度记录. 沉积学报, 27(6): 1147-1154. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200906018.htm 许中杰, 程日辉, 王嘹亮, 等, 2010. 广东东莞地区中侏罗统塘厦组凝灰质沉积物的元素地球化学特征及构造背景. 岩石学报, 26(1): 352-360. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201001040.htm 张士三, 1990. 太平洋中部表层沉积物镁铝含量比的变化. 台湾海峡, 9(3): 244-249. https://www.cnki.com.cn/Article/CJFDTOTAL-TWHX199003008.htm 赵永胜, 宋振亚, 温静萍, 等, 1998. 保山盆地湖相泥岩微量元素分布与古盐度定量评价. 海洋与湖沼, 29(4): 409-416. https://www.cnki.com.cn/Article/CJFDTOTAL-HYFZ199804010.htm 郑荣才, 柳梅青, 1999. 鄂尔多斯盆地长6油层组古盐度研究. 石油与天然气地质, 20(1): 20-26. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT901.019.htm 周蒂, 孙珍, 陈汉宗, 等, 2005. 南海及其围区中生代岩相古地理和构造演化. 地学前缘, 12(3): 204-218. https://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200503029.htm